Q1B340 - 40 Amp Circuit Breaker

Q1B340 - 40 Amp Circuit Breaker

When you're replacing a breaker in existing electrical equipment, getting the details right matters. The Q1B340 is a 40-amp, 3-pole thermal-magnetic circuit breaker with a bolt-on design. It is rated 10 kA I.C. at 240 VAC and is intended for compatible equipment that uses the Q1B breaker type. The breaker measures 6.38 inches high, 2.25 inches wide, and 2.31 inches deep and requires six spaces. That combination of size, mounting style, and electrical ratings makes the Q1B340 a useful option for maintaining a legacy system that requires this specific configuration. Rather than changing the equipment setup, the goal is simple: match the breaker to the application as closely as possible. If your existing equipment calls for a 40A, three-pole Q1B bolt-on breaker with these ratings and dimensions, the Q1B340 may provide the form, fit, and function you need. It's a straightforward circuit-protection component built to last in its intended application.

Key Features and Benefits

• 40-amp rating for equipment designed around a 40A breaker.
• Three-pole design for compatible three-pole applications.
• Bolt-on connection matches equipment designed to accept this mounting style.
• Thermal-magnetic operation provides overload and overcurrent protection within the breaker's specified operating characteristics.
• Rated 10k A.I.C. at 240VAC.
• Q1B configuration helps simplify identification when matching an existing breaker.
• Requires six spaces, an important detail to check when confirming physical fit.
• Designed as a practical choice for maintaining compatible legacy electrical equipment.
• Built to last when properly installed and used within its specified ratings.

Technical Specifications

• Part Number: Q1B340
  
• Type: Q1B
  
• Breaker Type: Thermal Magnetic
  
• Mounting Style: Bolt-On
  
• Amperage: 40A
  
• Poles: 3
  
• A.I.C. Rating: 10k
  
• Voltage: 240VAC
  
• Height: 6.38 in.
  
• Width: 2.25 in.
  
• Depth: 2.31 in.
  
• Spaces Required: 6
  

Material Compliance and Certifications

• Certification and material compliance details were not provided with the available specifications for the Q1B340. For that reason, no specific UL, CSA, RoHS, or other certification is claimed here.
• If a particular certification or compliance standard is required for your application, check the markings on the breaker and the documentation for the equipment in which it will be installed. Applicable electrical codes and local requirements should also be considered.

Where It Works Best

• The Q1B340 makes the most sense for existing or legacy electrical equipment designed for a breaker with this particular Q1B configuration. It's especially relevant when you need to preserve the original setup rather than alter the equipment to accommodate a different breaker style.
• Before using the Q1B340 as a replacement, compare more than just the amperage. Check the three-pole configuration, 40-amp rating, 240 VAC rating, 10kA I.C. rating, bolt-on connection, six-space requirement, and physical dimensions against the breaker being replaced and the equipment requirements.